hyro

Hello, haven't played L2 for very long time. Mostly played on later chronicles with high rates, but want to try classic now, so I am pretty much a newbie. Is there a SP limit for a character? I'm levelling HE, so I wonder if I should skip some skills for now or skip them entirely due to hitting some SP cap. On servers I played you just learned all availible skills, which I doubt is the way in classic. So would it be a huge mistake to put too much SP in smth like masteries, so i wont ever be able to get some usefull skill? If so, what skills should I look out for as HE?